Which statement describes the bases pairing in nucleic acids? Purine bases always pair with other purine bases Purine bases can only pair with pyrimidine bases Adenine cannot pair with either uracil or thymine Hydrogen bonding can only occur between the pyrimidine bases Guanine is always paired with adenine
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Which statement describes the bases pairing in
Purine bases always pair with other purine bases
Purine bases can only pair with pyrimidine bases
Adenine cannot pair with either uracil or thymine
Hydrogen bonding can only occur between the pyrimidine bases
Guanine is always paired with adenine
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- RNA differs from DNA in that the base _______________ is substituted for _______________. (a) adenine; uracil (b) uracil; thymine (c) guanine; uracil (d) cytosine; guanine (e) guanine; adenineWhich of the following is true of the molecule below? nucleotide 5' 3′ H₂C H₂C TNHNA O. HN CNH…NG NH O NH O HNU NH O CNHNG OHN nucleoside CH₂ CH₂ a purine pairs with a pyrimidine base the bases are held together by covalent bonds a nucleoside is made of the same components as a nucleotide The bases make up the backbone on the sides of the moleculeThe blackbone of nucleic acids consists of :A-a phosphodiester bond between the 2'and 5' hydroxyl groups of neighbroing sugers B-a phosphodiester bond between the 3' and 5' hydroxyl groups of neighboring sugers C- a glycosidic bond between a purine and a sugar D- a glycosidic bond between a pyrimidine and a sugar
- Which one of the following statements about nucleic acids is correct? Multiple Choice NTPs can be incorporated into either DNA or RNA molecules, but dNTPs can only be incorporated into DNA molecules A nitrogenous base, 5-carbon sugar, and two phosphate groups would most accurately be referred to as a nucleotide diphosphate. During nucleic acid synthesis, the phosphate group at the 3' carbon of the incoming monomer is covalently linked to the hydroxyl group at the 5' carbon of the existing macromolecule. RNA and DNA have all the same pyrimidine bases in them, but differ in the selection of purine bases. A nucleic acid found in a cell with the sequence GCCTTATCGCG would most likely be found paired with another molecule in double-stranded form.Select all of the true statements regarding the molecule below: Thymine 5' end Adenine 3' end OH NH2 NHN Phosphate- deoxyribose backbone 0H2N H2N NH2 o. Guanine Cytosined 3' end 5' end This is RNA O This is DNA O This is a monomer O The backbone of these nucleotides is a 5-carbon sugar. This nucleic acid is found in healthy human cells. This nucleic acid is the hereditary material for coronaviruses. This type of nucleic acid is usually found as a single stranded molecule. This nucleic acid is the hereditary material for some viruses, but not the SARS-CoV- 2 virus.Which statement is true concerning the nucleotide shown below? The base is a purine and the sugar is ribose. The base is a pyrimidine and the base is ribose. The base is a pyrimidine and the sugar is deoxyribose. The base is a purine and the sugar is deoxyribose.
- The keto form of 5-bromouracil will replace Thymine to base pair with Adenine. Which nucleotide will base pair with the enol form of 5-bromouracil? Guanine Uridine Cytosine Adenine ThymineWhich two pyrimidine bases are always found in ribonucleic acids? guanine and adenine cytosine and thymine uracil and cytosine thymine and guanine adenine and uracilA Uracil B Adenine HN Cytosine Guanine 2 H₂N-C 6 3 N Which of the following nitrogenous bases is represented by this structure? 5 C C N 7 IZⓇ 8 CH
- Nucleic Acids True or false Both pentose nucleic acidand deoxypentose nucleicacid contain the samepyrimidines Both pentose nucleic acidand deoxypentose nucleic acid and deoxypentosenucleic acid Contain thesame purines RNA contains cytosine and thymine DNA and RNA are hydrolysedby weak alkalWhich of the following is correct regarding nucleotide structure? Removal of the ribose-phosphate groups from thymidylic acid or thymidylate yields thymidine Removal of the ribose-phosphate groups from cytidine yields cytosine Removal of the phosphate group from guanylic acid or guanylate yields guanine. Removal of the phosphate group from adenylate or adenylic acid yields adenosineHow many molecules of water were formed from the complex of the given structure? Give ONLY the NUMBER of water molecules. NH, NH, NH, OH 0=P-0 OH 0=P-O- Your answer Name the second complementary base from the 3' direction. USE ALL CAPITAL LETTERS ONLY. NH, NH2 NH,
